Sealing strip



'Feb. 4, 1941. w GAlL 2,230,985

SEALING STRIP Filed Sept. 20, 1937 2 Sheets-Sheet l Feb. 4, 1941. w G L2,230,985

SEALING STRIP Filed Sept. 20, 1937 2 Sheets-Sheet 2 Patented Feb. 4,1941 UNIE ST FEE SEALING STRIP Application September 20, 1937, SerialNo. 164,770

1 Claim.

This invention relates to certain improvements in sealing strips andparticularly to the general type of combined flexible and metallicsealing strip as disclosed in applicants prior Patents 1,991,776 and2,070,725 and pending application Serial No. 121,877 new patent numbered2,102,578.

These prior constructions all comprised a substantially semi-cylindricalresilient or flexible engaging portion and a relatively stiff or rigidbase portion, preferably of metal, the semi-cylindrical resilientportion being secured in operative position and maintained therein bysaid base portion. In most of these prior constructions the-re is aninterlocking engagement between the rigid base and flexible portions andboth the inner and outer portions of both longitudinal edges of theflexible engaging part of the strip are clamped by the rigid baseportion.

The object of the present invention is to simplify the construction andmanner of mounting of sealing strips of this character, and at the sametime retain all of the valuable features of applicants priorconstructions and arrangements.

Another object of the invention is to reduce the amount of materialnecessary to produce the base portion, and yet retain the interlockingfeature between the said base and flexible portions,

A further object of the invention is the production of a sealing stripof the character indicated whereby its adaptability and use is greatlyincreased to permit its application to various structures and to meetdifferent conditions.

All of the above improved features tend toward a materially reduced costof manufacture, as the flexible portion can be extruded or molded as arelatively flat strip and the amount of ma terial to produce the base isgreatly reduced. Furthermore, the metallic base portion where it isentirely enclosed can be made of thin steel instead of more expensiverust resisting metals.

The preferred embodiment of the invention is illustrated in theaccompanying drawings in which Figure 1 is a view partly in perspectiveand partly in section of the complete sealing strip mounted in operativeposition,

Figure 2 is a similar view showing a somewhat modified constructionparticularly applicable to a narrow type of sealing strip,

Figures 3 and 4 illustrate two forms of the flexible portion of thesealing strip produced as a flat strip either by extruding or molding,

Figures 5 and 6 are further modifications showing a two-piece clampingmeans wholly within the flexible engaging portion, and

Figures 7 and 8 also illustrate a two-piece clamping means arrangedalong the outside edges of the flexible engaging portion, Figure 7showing a wide type of sealing strip whereas Figure 8 showssubstantially the same idea applied to a narrow type of sealing strip,saidv modifications as illustrated in Figures 5, 6, 7 and 8 thusadapting the strip to various available clearances, and also making thesame applicable to various thicknesses of doors and similar structureswhere such sealing strips are used.

Referring to the drawings in detail and particularly to Figures 1 and 2,the improved sealing strip when assembled, comprises a substantiallysemi-cylindrical flexible engaging portion l and an enclosed metallicclamping portion 2, which in combination with the member 3 to which itis attached, comprise the base for said sealing strip, the metallicportion 2 being secured to the member 3 by screws or the like 4.

The metallic clamping portion 2 is preferably of the shape as shown,having a depressed intermediate portion 5 and inverted U-shapedlongitudinal opposite edge portions 6 adapted to embrace the enlargededge portions formed along the longitudinal edges of the flexibleengaging portions I. It will also be noted that just the right amount ofclearance is allowed along the extreme outer edges of the metallicportion 2 to permit the insertion of the edges of the flexible engagingportion I when it is desired to assemble the strip in this manner afterthe metallic portion 2 has been secured in place. Where the parts arefirst assembled and then mounted in operative position the outer face ofthe flexible engaging portion l is provided with properly spaced holes 8for the insertion of the f-astenings 4 and a screw driver or the likefor setting these fastenings.

The construction as illustrated in Figure 2 is similar to that shown inFigure 1 except that the depressed portion 5 has been narrowedconsiderably so that the head of the fastening 4 will engage theinverted U-shaped edge portions 6 and thus making it possible to producea much narrower sealing strip.

The flexible engaging portion l is preferably produced in substantiallyflat form as illustrated in Figures 3 and 4, by either extrusion ormolding but in both instances the opposite longitudinal side edges aremade thicker or provided with enlarged portions 7 for the purpose ashereinbefore described.

Referring to Figures 5 and 6 the metallic clamping means issubstantially the same as that disclosed in Figures 1 and 2 except thatthe same is made in two pieces 9 and I0 each piece or clamping stripbeing secured in position by screws or similar fastenings Ill and 12respectively. Figures 5 and 6 however illustrate different methods ofattachment according to the use and place of mounting. In both of theseforms the metallic clamping strips are enclosed within the flexibleengaging member I.

Figure '7 illustrates a side mounting of the clamping means as shown inFigure 6, but as applied to the outside edges of the flexible engagingmember I.

In Figure 8 a further modification is shown of the two-piece clampingmember as applied to the outside edges of the flexible portion, where arelatively small and narrow sealing strip is desired.

I claim:

In a sealing stnip adapted to be secured to a supporting member, thecombination with a substantially semi-cylindrical flexible elasticstrip, enlarged edge portions carried by said strip forming U-shapedparallel channels inside the strip, a securing member for said stripprovided with parallel inverted U-shaped channel portions ininterlocking engagement with said first mentioned U-shaped channels ofsaid strip and means for fastening said securing member to saidsupporting member, whereby said strip will be held between the securingmember and supporting member.

GEORGE W. GAIL.

